An endoscope device includes: a light source unit having a light source and a dimming control unit that performs dimming control of light from the light source to supply a desired light amount of illumination light to illumination windows a lens unit having a zoom tool of which a focus distance is variable to form an observation image of a subject an imaging unit that photographs the observation image obtained from the lens unit to output a photographed image and a focus distance switching unit that performs switching to any mode of a far-focus mode and a near-focus mode according to light amount information of the illumination light and luminance distribution information of the output photographed image.
